TIFU by almost exposing my side hustle at work because of a stupid receipt

For context, I have a regular 9-5 office job. It’s fine, but it’s not exactly something I’m passionate about. Over the last year, I started picking up freelance graphic design projects on the side. It’s nothing huge, but it brings in some decent extra income here and there, enough that I’ve managed to build up some savings, and if all goes well, I’m hoping to leave my current job in the next three months to freelance full time.

The catch is that my company has a strict no moonlighting policy. Even though I only take freelance work outside of office hours, they’re pretty clear that anything like a second source of income has to be disclosed, and honestly, I’d rather not get into it with them until I’m ready to leave.

Anyway, today during lunch, I went to grab coffee with a coworker. I offered to pay, pulled out my wallet without thinking, and accidentally handed the cashier the wrong card, my freelance business card, which literally has the name of my design page printed on it.

The cashier, being super cheerful and loud, said, "Oh wow, you do design? That's so cool!" right in front of my coworker. She immediately started asking what it was about, and I panicked and said something vague about helping a friend's project.

Now she’s suspicious, and if word gets around, I could have a pretty awkward conversation with my boss way earlier than planned. I’ve been so careful for months, and one careless moment at a coffee shop might blow it all up.

TL;DR: I accidentally handed my coworker my freelance business card instead of my regular one and now she’s suspicious. Might have accidentally outed my secret side hustle to my boss three months earlier than planned.